Double-stage Metamodel and Its Application in Aerodynamic Design Optimization

作者：Zhang Dehu; Gao Zhenghong^*; Huang Likeng; Wang Mingliang

来源：Chinese Journal of Aeronautics, 2011, 24(5): 568-576.

DOI：10.1016/S1000-9361(11)60066-6

• optimization
• genetic algorithm
• double-stage metamodel
• Kriging
• BP neural network
• Latin hypercube
• Parsec method

Constructing metamodel with global high-fidelity in design space is significant in engineering design. In this paper, a double-stage metamodel (DSM) which integrates advantages of both interpolation metamodel and regression metamodel is constructed. It takes regression model as the first stage to fit overall distribution of the original model, and then interpolation model of regression model approximation error is used as the second stage to improve accuracy. Under the same conditions and with the same samples, DSM expresses higher fidelity and represents physical characteristics of original model better. Besides, in order to validate DSM characteristics, three examples including Ackley function, airfoil aerodynamic analysis and wing aerodynamic analysis are investigated. In the end, airfoil and wing aerodynamic design optimizations using genetic algorithm are presented to verify the engineering applicability of DSM.

• 出版日期2011-10
• 单位西北工业大学